Cablevision CEO James Dolan just turned up the heat on cable consolidation talk.

In an interview on CNBC, Dolan said he doesn't understand why the Comcast, Time Warner Cable deal didn't go through, noting that there would still be plenty of competition even if the two companies had joined. "I certainly was not against it," Dolan said.

Now that the deal is off, he said there's plenty of consolidation opportunity for Cablevision.

"There is a lot of opportunity inside of consolidating the marketplaces and, in particular the one I know best, New York," Dolan said.

Earlier on Wednesday, Dolan spoke on a panel at the INTX cable conference in Chicago, where he said he was very interested in cable consolidation in the New York area. Cablevision's stock climbed in response and traded up nearly 5 percent in the early afternoon.